<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
        <div id="main" style="width: 600px;height:600px;"></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts';
export default {
    name:'report',
    data(){
        return{
          options: {
            title: {
              text: '用户来源'
            },
            tooltip: {
              trigger: 'axis',
              axisPointer: {
                type: 'cross',
                label: {
                  backgroundColor: '#E9EEF3'
                }
              }
            },
            grid: {
              left: '3%',
              right: '4%',
              bottom: '3%',
              containLabel: true
            },
            xAxis: [
              {
                boundaryGap: false
              }
            ],
            yAxis: [
              {
                type: 'value'
              }
            ]
          }
        }
    },
    async mounted(){
      var myChart = echarts.init(document.getElementById('main'));
      const {data: res} = await this.$http.get('reports/type/1');

      if(res.meta.status != '200'){
        return this.$message.error("数据获取失败！")
      }
      //对象合并方法1，...扩展运算符
      const option = {...this.option,...res.data}
      //对象合并方法2， 利用ES6 Object新增assign方法
      let option2=Object.assign({},this.option,res.data);
      console.log(option2);
      // console.log(option);
      // 绘制图表
      myChart.setOption(option2);

    }
}
</script>

<style scoped>

</style>